I can see this as the idea for a video game. Seiga has turned her back on Miko and taken her prisoner, but something isn't quite right with her and it's up to Tojiko and possibly Futo to help solve the mystery behind Seiga's actions and why Miko was taken away. The main character would be Tojiko and Futo would be like, the person who gives tips in the game but doesn't really offer in game help besides advice. I haven't exactly figured out where the sword would come into play but I figure that Miko would have hidden it away in a place where only Tojiko or Futo might find it.